Gentamicin, sold under brand names Garamycin among others, is an antibiotic used to treat several types of bacterial infections.[1] This may include bone infections, endocarditis, pelvic inflammatory disease, meningitis, pneumonia, urinary tract infections, and sepsis among others. It is not effective for gonorrhea or chlamydia infections.
Rod Details. The rods are the most numerous of the photoreceptors, some 120 million, and are the more sensitive than the cones. However, they are not sensitive to color. They are responsible for our dark-adapted, or scotopic, vision.The rods are incredibly efficient photoreceptors.owever, they are not sensitive to color. The 6 to 7 million cones provide the eye's color sensitivity and they are much more concentrated in the central yellow spot known as the macula. In the center of that region is the  fovea centralis , a 0.3 mm diameter rod-free area with very thin, densely packed cones.
Michael Kalloniatis and Charles Luu. Dark Adaptation. The eye operates over a large range of light levels. The sensitivity of our eye can be measured by determining the absolute intensity threshold, that is, the minimum luminance of a test spot required to produce a visual sensation.hen stimuli of different wavelengths are used, the dark adaptation curve is affected. From figure 7 below, a rod-cone break is not seen when using light of long wavelengths such as extreme red. This occurs due to rods and cones having similar sensitivities to light of long wavelengths (figure 8).